Halortidae
Encyclopedia
The Haloritidae is an ammonoid family belonging to the Ceratitida
and placed in the Tropitaceae, a superfamily. The Haloritidae are characteristically subglobose and involute, commonly with lateral ribs that may cross the venter. In some the ribs may have nodes. Ventral keels and furrows are atypical. The last volution (whorl) is commonly eccentric. Sutures are ammonitic, ceratic, or goniatitic.
The family Haloritidae was named by Mojsisovics in 1893. Fossils come from the Upper Triassic.
Haloritinae Mojsisovics 1893; haloritids in which spiral ornamentation is weak or absent. Genera include Halorites, Homerites
, and Jovites.
Sagenitinae Spath 1951; haloritids with prominent spiral ornamentation and more complex sutures. Genera include Sagenites and Trachysagenites.
Episculitinae Spath 1951; haloritids in which the body chamber becomes uncoiled and the suture is simplified. Genera include Episculites and Euiscalites.
Ceratitida
The Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammonites....
and placed in the Tropitaceae, a superfamily. The Haloritidae are characteristically subglobose and involute, commonly with lateral ribs that may cross the venter. In some the ribs may have nodes. Ventral keels and furrows are atypical. The last volution (whorl) is commonly eccentric. Sutures are ammonitic, ceratic, or goniatitic.
The family Haloritidae was named by Mojsisovics in 1893. Fossils come from the Upper Triassic.
Taxonomy
The Haloritidae are divided into 3 sufamilies,the:Haloritinae Mojsisovics 1893; haloritids in which spiral ornamentation is weak or absent. Genera include Halorites, Homerites
Homerites
For history see Himyarite KingdomHomerites is a small, involute, globase fossil ceratitid with an eccentric outer whorl and subammonitic sutures belonging to the family Halortidae The body chamber has a slight central keel and radial dichotomous ribs that commonly terminate at spines on the ventral...
, and Jovites.
Sagenitinae Spath 1951; haloritids with prominent spiral ornamentation and more complex sutures. Genera include Sagenites and Trachysagenites.
Episculitinae Spath 1951; haloritids in which the body chamber becomes uncoiled and the suture is simplified. Genera include Episculites and Euiscalites.